Exercise
You are given a piece of text with six questions.
You are also given a set 4 choices for each question.
Identify the correct option by clicking on it.
Once all the questions have been answered, click on the check button.
Correct answers will appear in green, incorrect answers in red.
Your mark will be given as a percentage.
The pass mark for this exercise is 60% or over and you need to be able to do this exercise in the exam in about 10 minutes.
(A timer is given here to help you.)
10:00 min.
Physicist Steven Desch has come up with Q.1 a novel solution to the problems that now beset the Arctic. He and a team of colleagues from Arizona State University want to replenish the region's shrinking sea ice by building 10 million wind-powered pumps over the Arctic ice cap. In winter, these would be used to pump water to the surface of the ice where it would freeze, thickening the cap.
The pumps could add an extra metre of sea ice to the Arctic's current layer, Desch argues. The current cap rarely exceeds 2-3 metres in thickness and is being eroded constantly as the planet succumbs to climate change. Thicker ice would mean longer-lasting ice. In turn, that would mean the danger of all sea ice disappearing from the Arctic in summer would be reduced significantly.
Hence Desch's scheme to use wind pumps to bring water which is insulated Q.3 from the bitter Arctic cold by its icy surface, where it will freeze and thicken the ice cap. Nor is the physicist alone in his Arctic scheming. Other projects to halt sea-ice loss include one to artificially whiten the Arctic by scattering light-coloured aerosol particles over it to reflect solar radiation back into space, and another to spray sea water into the atmosphere above the region to create clouds that would also reflect sunlight away from the surface.
Last November, when sea ice should have begun thickening and spreading over the Arctic as winter set in, the region warmed up. Temperatures should have plummeted to -25C but reached several degrees above freezing instead. It's been about 20C warmer than normal over most of the Arctic Ocean. Q.5 This is unprecedented.
In fact, sea ice growth stalled during the second week of January - in the heart of the Arctic winter - while the ice cap actually retreated within the Kara and Barents seas, and within the Sea of Okhotsk. Similarly, the Svalbard archipelago, normally shrouded in ice, has remained relatively free because of Q.6 the inflow of warm Atlantic water along the western part of the island chain. Consequently, although there has been some recovery, sea ice remains well below all previous record lows.
The Tribune
1) What is the writer's intention in the first paragraph?
2) What outcome does the writer suggest in the second paragraph?
3) What does the writer mean when he describes the water as being insulated in the third paragraph?
4) What objective is the writer describing at the end of the third paragraph?
5) What is the writer referring to with the word This at the end of paragraph 4?
6) What reason does the writer give in the final paragraph for the sea ice not getting thicker?
Your score is /, which represents % of correct answers.